Sheet Metal Bend Deduction Calculator

Figure 2 illustrates the sheet that is bent with the bend angle of 90 degrees.

Sheet metal bend deduction calculator.

The bend allowance is the amount of the neutral axis that bends. Ultimate tensile strength psi. Most sheet metal materials will conform to the calculations. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.

Understanding the bend deduction and consequently the bend allowance of a part is a crucial first step to understanding how sheet metal parts are fabricated. Therefore the bend allowance added to the flange lengths is equal to the total flat. Cells on the right will output the desired values. Punch edge radius in.

When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched. In the example above it is indicated by a dashed blue line. As this happens you gain a small amount of total length in your part. Understanding the bend allowance and consequently the bend deduction of a part is a crucial first step to understanding how sheet metal parts are fabricated.

From there we can calculate the k factor and the bend deduction. Sheet metal right angle bend deduction calculator formula step by step calculation to find the difference between the sum of flange lengths and the initial flat length. After bending the sheet we need to do some measurements as shown in figure 2. This page also includes a link to a on line sheet metal bend allowance calculator.

You only have to insert interior angle flange lengths k factor inside radius and material thickness. Bd 2 r t x tan a 2 ba. The bend allowance and bend deduction are two measures that relate the bent length of a piece of sheet metal to the flat length. With this free online tool we quickly get the sheet metal bend deduction and therefore the sheet metal blank initial flat length from the finished part measurements.

The bend allowance describes the length of the neutral axis between the bend lines or in other words the arc length of the bend. We will start by calculating the bend allowance. Most sheet metal materials will conform to the calculations. In the example above it is indicated by a dashed blue line.

Sheet metal calculator bend allowance equations and calculator. When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched. Although it is an option for calculating a bend in some cad programs such as solid works it is not often referred to in the actual manufacturing process since.